cumulating evidence points to a key role for cd8+ t cells in the pathogenesis of multiple sclerosis.cd8 expression level was believed to be present constantly on the surface of human peripheral blood t cells. however, it was shown that peripheral blood lymphocytes may be divided by the level of cd8 expression, into cd8+high and cd8+low t cells. now it is well established that the cd8low populat...

Soybean isoflavone genistein has multiple anticancer properties and its pro-apoptotic and anti-proliferative effects have been studied in different cancer cells. However, the mechanisms of action of genistein and its molecular targets on human colon cells have not been fully elucidated. Therefore, caspase-3 and p38 mitogen-activated protein kinase (p38 MAPK) as the main therapeutic targets...

background: kinesin spindle protein (ksp) plays a critical role in mitosis. inhibition of ksp function leads to cell cycle arrest at mitosis and ultimately to cell death. the aim of this study was to suppress ksp expression by specific small-interfering rna (sirna) in hep3b cells and evaluate its anti-tumor activity. methods: three sirna targeting ksp (ksp-sirna #1-3) and one mismatched-sirna (...

The aim of this study was to isolate mouse embryonic stem cells from late blastocyst stage embryos and to use them as a model system for the study of hematopoietic induction outside the embryo by coculturing of embryonic stem cells with bone marrow stromal cells. Blastocyst stage embryos from pregnant NMRI mice were obtained and cultured for 1-2 days in DMEM medium. The inner cell masses formed...

Background and Objective: The rate of survival in acute promyelocytic leukemia (APL) can dramatically improve, if the patients receive all-trans-retinoic acid (ATRA) treatment. However, this drugchr('39')s toxicity is a major problem in APL treatment. Previous researches have demonstrated that phyto-polyphenols such as epigallocatechin gallate (EGCG) and kaempferol cause apoptosis in hematopoie...

Background: Toll-like receptors (TLRs) constitute a major part of innate immunity, which can distinguish pathogen associate molecular pattern. Sertoli cells create a special immunological niche that protects somniferous tubules from auto antigens and pathogens. These cells are the only somatic cells in somniferous that protect testis cells against pathogens. The purpose of this study was to eva...